Digital Forensics & Expert Witness

Evidence that holds up under cross-examination.

Independent digital forensics for defense attorneys, civil litigators, and private clients. Mobile device and hard drive analysis, data recovery, and court-ready reporting — backed by rigorous chain of custody and documentation detailed enough to replicate, step by step.

  • Cellebrite & Axiom Workflow
  • Expert Testimony
  • CLE Instructor
20 Years Technical Experience
Dozens Criminal & Civil Cases
Trial Testimony Experience
CLE Accredited Instructor

Capabilities

Forensic analysis, end to end.

From acquisition through testimony — every engagement documented to a standard that survives challenge.

MOBILE

Mobile Device Analysis

Full forensic extraction of smartphones — call logs, messages, app data, and deleted content recovery, with Cellebrite and Axiom Examine reporting.

STORAGE

Hard Drive & Computer Forensics

Forensic imaging, file recovery, deleted data extraction, and metadata analysis — including corrupted and physically damaged drives.

TESTIMONY

Expert Witness Services

Testimony and forensic consultation for criminal defense and civil litigation, with court-ready reports prepared to exacting standards.

VIDEO

Security & Body Camera Analysis

Review, enhancement, and frame-by-frame analysis of surveillance and body camera footage, documented for court submission.

RECOVERY

Data Recovery & Extraction

Recovery from corrupted, damaged, or encrypted media — raw extraction from phones and drives, plus cloud backup reconstruction.

VEHICLE

EDR & Vehicle Black Box Analysis

Event Data Recorder collection and analysis — speed, braking, and control inputs at the moment of an incident.

METADATA

Metadata & Email Analysis

Embedded metadata in images, documents, and attachments; full header analysis establishing origin, routing, and authenticity.

CUSTODY

Chain of Custody Documentation

Complete records of dates, locations, transfers, storage, and analysis — with replication instructions for every finding.

Methodology

Every finding is reproducible.

Reports include step-by-step replication instructions, so opposing counsel and the court can follow the same path to the same result. Acquisition is write-blocked, hashes are verified before and after, and custody is recorded at every transfer.

ACQUISITIONWRITE-BLOCKED
ALGORITHMSHA-256 / MD5
CUSTODY LOGCONTINUOUS
◆ VERIFIEDREPRODUCIBLE

Toolkit

Industry-standard instrumentation.

Forensic Analysis
  • Cellebrite
  • Axiom Examine
  • Autopsy
  • Cyber Triage
  • Velociraptor
Network & Security
  • Wireshark
  • NMAP
  • Network Miner
  • Encrypted Disk Detector
  • RAM Capturer
Specializations
  • Cloud Backup Recovery
  • Metadata Analysis
  • Email Header Analysis
  • Corrupted Drive Recovery
  • Cell Phone Data Parsing

Engagement

Bring the evidence into focus.

Whether you need forensic analysis for an active case or consultation on digital evidence strategy, John Cate is available to assist defense attorneys, civil litigators, and private clients. All inquiries are confidential, and typically answered within one business day.